Asymptotic state of nonlinear Landau damping in one-dimensional plasma
Plasma Physics
2025-12-22 v1
Abstract
In this work, the asymptotic state of nonlinear Landau damping in one-dimensional plasma has been examined using a quasi-linear model and a second-order symplectic integrator. The dispersion relation of the plateau distribution function for the steady-state solution of the quasi-linear mode is extended to the complex plane and compared with the nonlinear simulation. We determine that the asymptotic state of the collisionless plasma is a multi-wave BGK structure. This structure is characterized by multiple vortices in phase space, which correspond to distinct peaks in the frequency-wavenumber ({\omega}, k) spectrum of the electric field
Cite
@article{arxiv.2512.17269,
title = {Asymptotic state of nonlinear Landau damping in one-dimensional plasma},
author = {Yifei Ouyang and Ping Zhu and Chung-Sang Ng},
journal= {arXiv preprint arXiv:2512.17269},
year = {2025}
}